Go Premium for a chance to win a PS4. Enter to Win

x
?
Solved

Tomcat seems to throw 404 errors every second request when accessing dynamically generated files

Posted on 2010-11-25
2
Medium Priority
?
891 Views
Last Modified: 2012-05-10
We have set up an environment in which exists 2 web servers.

Server 1 - Tomcat Server serving a Java host application.
Server 2 - IIS web server serving a proprietary application via web services

The issue we're having is as follows:

When a specific call is made to a particular web method on Server 2 it generates an html file and associated images on a shared drive. This in itself works fine.

This shared drive is permanently mapped as a virtual directory in Tomcat on Server 1, so that images related to the html page can be retrieved via Server 1 rather than requiring direct access to Server 2.

When the first request is made to retrieve the images, the html and images show fine.
However on subsequent requests Tomcat throws a 404. It then takes a few seconds to untangle itself, then 1 further request will work, followed by a string of 404s.

The individual http requests are completely independent requests for different urls (as the files being requested are dynamically generated with different names each time), and logging shows these files do exist on the drive before Tomcat requests the file to read and stream back.

We believe the problem lies with Tomcat although it's possible something else is going on.
Caching is disabled on the virtual directory.

Any help would be very much appreciated.
0
Comment
Question by:capsoftuk
2 Comments
 
LVL 27

Accepted Solution

by:
BigRat earned 1500 total points
ID: 34256038
I presume that the images are being created by IIS and are to be retrieved by Apache/TomCat?

It would seem to me that the directory pages of the image directory is being buffered in TomCat or the platform on which it runs. Thus it will randomly give a "file not found" response.

Are the platforms the same, or is this a Linux/Windows environment?
0
 

Author Closing Comment

by:capsoftuk
ID: 37313881
Solved otherwise
0

Featured Post

Vote for the Most Valuable Expert

It’s time to recognize experts that go above and beyond with helpful solutions and engagement on site. Choose from the top experts in the Hall of Fame or on the right rail of your favorite topic page. Look for the blue “Nominate” button on their profile to vote.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Periodically we have to update or add SSL certificates for customers. Depending upon your hosting plan you may be responsible for the installation and/or key generation. In the wake of Heartbleed many sites were forced to re-key. We will concen…
Meet the world's only “Transparent Cloud™” from Superb Internet Corporation. Now, you can experience firsthand a cloud platform that consistently outperforms Amazon Web Services (AWS), IBM’s Softlayer, and Microsoft’s Azure when it comes to CPU and …
Exchange organizations may use the Journaling Agent of the Transport Service to archive messages going through Exchange. However, if the Transport Service is integrated with some email content management application (such as an anti-spam), the admin…
Are you ready to place your question in front of subject-matter experts for more timely responses? With the release of Priority Question, Premium Members, Team Accounts and Qualified Experts can now identify the emergent level of their issue, signal…
Suggested Courses
Course of the Month9 days, 13 hours left to enroll

926 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question